Moteurs de stockage

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variables | Mémoire tampon | État InnoDB ]

=====================================
2026-10-31 20:55:30 0xd5c INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 42 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 12321 srv_active, 0 srv_shutdown, 1080960 srv_idle
srv_master_thread log flush and writes: 1093281
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 35550
OS WAIT ARRAY INFO: signal count 35375
RW-shared spins 25092, rounds 725422, OS waits 23466
RW-excl spins 120, rounds 797, OS waits 19
RW-sx spins 4, rounds 120, OS waits 4
Spin rounds per wait: 28.91 RW-shared, 6.64 RW-excl, 30.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 5248918
Purge done for trx's n:o < 5248918 undo n:o < 0 state: running but idle
History list length 4
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283425819181344, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283425819177176, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283425819173008, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
 ibuf aio reads:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
181723 OS file reads, 159522 OS file writes, 117176 OS fsyncs
0.05 reads/s, 16384 avg bytes/read, 0.48 writes/s, 0.43 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
 insert 0, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
0.76 hash searches/s, 1.55 non-hash searches/s
---
LOG
---
Log sequence number 45530645912
Log flushed up to   45530645912
Pages flushed up to 45530645912
Last checkpoint at  45530645903
0 pending log flushes, 0 pending chkp writes
73514 log i/o's done, 0.29 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 247896
Buffer pool size   1003
Free buffers       741
Database pages     256
Old database pages 0
Modified db pages  0
Percent of dirty pages(LRU & free pages): 0.000
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 17499, not young 566207
0.00 youngs/s, 0.00 non-youngs/s
Pages read 181620, created 772, written 70306
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
No buffer pool page gets since the last printout
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 256, unzip_LRU len: 0
I/O sum[8]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=6176, Main thread ID=7784, state: sleeping
Number of rows inserted 349, updated 13763, deleted 27, read 118747464
0.00 inserts/s, 0.05 updates/s, 0.00 deletes/s, 0.81 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 24895
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================